{"id":1850,"date":"2017-10-13T22:44:41","date_gmt":"2017-10-13T20:44:41","guid":{"rendered":"https:\/\/www.adimec.com\/more-usable-pixels-on-the-vita-25k-25-megapixel-sapphire-cameras-with-active-sensor-control\/"},"modified":"2018-07-27T17:12:48","modified_gmt":"2018-07-27T15:12:48","slug":"more-usable-pixels-on-the-vita-25k-25-megapixel-sapphire-cameras-with-active-sensor-control","status":"publish","type":"post","link":"https:\/\/www.adimec.com\/ja\/more-usable-pixels-on-the-vita-25k-25-megapixel-sapphire-cameras-with-active-sensor-control\/","title":{"rendered":"More Usable Pixels on the Vita 25k 25 Megapixel Sapphire Cameras with Active Sensor Control"},"content":{"rendered":"
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The increased field of view and\/or throughput provided by 25 Megapixel Cameras<\/a> can only be a real benefit for inspection and metrology applications with uniform images and linear pixel response.  Active Sensor Control (ASC) is an automated way in a camera to correct for various deviating pixel conditions in an image sensor, such as fixed pattern noise (FPN), photo response non-uniformity (PRNU), shading, among others.  With ultra high-resolution cameras, the impact of these effects can be even greater.  For more background information on Active Sensor Control<\/a> and how to test it in your system<\/a>, please click the links to the previous blogs. <\/p>\n

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With optical measurement applications, the accuracy can depend on the reliability of the pixel information.  ASC provides the most usable pixels in a VITA 25K image sensor based system.  This is not simply just a factory process of mapping a pixel to be defective when it slightly misbehaves and remapping it with its nearest neighbors.<\/p>\n

In a 25 Megapixel CMOS machine vision camera, there can be up to 10000 classical defect pixels. When the ASC feature is used in a system, we have seen a reduction of up to 10 times in real defect pixels. The goal is to make sure the metrology information in the image is preserved.  Here we provide some system scenarios when this can be most beneficial.<\/p>\n

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There can be a lot of factors found in a system that influence the image performance.  Here are some examples of common issues for when ASC can be of great help:<\/p>\n